Name: Royal Ducts And Cleaning Services. Descripton:Rotary Brush System!! Dirty ducts act as a breeding ground for things like bacteria, germs, and mold which can cause poor air quality in the home. We will clean all the registers and cold air returns removing any dust, debris, pet hair, toys and we also clean the out side of the furnace and the furnace filter, and then we will fog your registers killing the bacteria germs and mold, we also hand wash all of your register covers. CALL TODAY and get your free estimate.